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App builder engine - builds Gradio apps from configuration.
This module provides a configuration-driven approach to building
demo applications powered by blueprint agent orchestration.
"""
import gradio as gr
from typing import Callable, Any
from dataclasses import dataclass, field
# Support both local and HF Spaces imports
try:
from apps.shared.pages import ListPage, DetailPage, FormPage, DashboardPage
from apps.shared.pages.form_page import create_processing_html
from apps.shared.ui_components import create_footer
except ImportError:
from shared.pages import ListPage, DetailPage, FormPage, DashboardPage
from shared.pages.form_page import create_processing_html
from shared.ui_components import create_footer
@dataclass
class AppConfig:
"""Configuration for a demo application."""
id: str
title: str
description: str | None = None
# Header links
github_url: str | None = None
studio_url: str | None = None
readme_url: str | None = None
# Entity naming
entity_name: str = "item"
entity_name_plural: str = "items"
# Sidebar navigation
sidebar: list[dict] = field(default_factory=list)
# Pages configuration
pages: dict[str, dict] = field(default_factory=dict)
# Data sources
data: dict[str, Any] = field(default_factory=dict)
# Orchestrator for processing
orchestrator: Any = None
class DemoApp:
"""
Demo application builder.
Builds a complete Gradio app from configuration with:
- Sidebar navigation
- Header with links
- Page templates
- Data binding
- Orchestrator integration
"""
PAGE_TEMPLATES = {
"list": ListPage,
"detail": DetailPage,
"form": FormPage,
"dashboard": DashboardPage,
}
def __init__(self, config: AppConfig | dict):
if isinstance(config, dict):
self.config = AppConfig(**config)
else:
self.config = config
self._current_page = "/"
def build(self) -> gr.Blocks:
"""Build the complete Gradio application."""
with gr.Blocks(title=self.config.title) as demo:
# Force light mode
gr.HTML("""
<script>
document.body.classList.remove('dark');
document.documentElement.style.colorScheme = 'light';
</script>
""", visible=False)
# State for current item (for detail views)
current_item = gr.State(None)
# Header
self._build_header()
# Main layout: Sidebar + Content
with gr.Row():
# Sidebar
with gr.Column(scale=1, min_width=200):
self._build_sidebar()
# Content area
with gr.Column(scale=4):
# Build all pages as separate containers
page_containers = {}
for path, page_config in self.config.pages.items():
is_home = path == "/"
with gr.Column(visible=is_home, elem_id=f"page-{path.replace('/', '-')}") as container:
self._build_page(path, page_config)
page_containers[path] = container
# Footer
create_footer()
return demo
def _build_header(self) -> None:
"""Build app header with title and links."""
with gr.Row():
with gr.Column(scale=3):
gr.Markdown(f"# {self.config.title}")
if self.config.description:
gr.Markdown(f"*{self.config.description}*")
with gr.Column(scale=1, min_width=300):
links_html = '<div style="display: flex; gap: 16px; justify-content: flex-end; align-items: center; padding-top: 8px;">'
if self.config.github_url:
links_html += f'<a href="{self.config.github_url}" target="_blank" style="text-decoration: none; color: #374151; font-size: 14px;">⭐ GitHub</a>'
if self.config.studio_url:
links_html += f'<a href="{self.config.studio_url}" target="_blank" style="text-decoration: none; color: #374151; font-size: 14px;">🚀 Lyzr Studio</a>'
if self.config.readme_url:
links_html += f'<a href="{self.config.readme_url}" target="_blank" style="text-decoration: none; color: #374151; font-size: 14px;">📖 Readme</a>'
links_html += '</div>'
gr.HTML(links_html)
def _build_sidebar(self) -> None:
"""Build sidebar navigation."""
for item in self.config.sidebar:
icon = item.get("icon", "")
label = item.get("label", "")
gr.Button(
f"{icon} {label}".strip(),
variant="secondary",
size="sm",
)
def _build_page(self, path: str, page_config: dict) -> None:
"""Build a single page from configuration."""
page_type = page_config.get("page", "list")
variant = page_config.get("variant", "standard")
config = page_config.get("config", {})
config["variant"] = variant
# Get data for this page
data = self._get_page_data(path, page_config)
if page_type == "list":
template = ListPage(config)
template.render(data)
elif page_type == "detail":
template = DetailPage(config)
if data:
template.render(data)
else:
gr.Markdown("*Select an item to view details*")
elif page_type == "form":
template = FormPage(config)
submit_btn, fields, result_container, processing_html, result_output = template.render()
# Connect form submission to orchestrator
if self.config.orchestrator:
self._connect_form_to_orchestrator(
submit_btn, fields, template,
result_container, processing_html, result_output
)
elif page_type == "dashboard":
template = DashboardPage(config)
template.render(data)
def _get_page_data(self, path: str, page_config: dict) -> Any:
"""Get data for a page from configured data sources."""
data_key = page_config.get("data_key")
if data_key and data_key in self.config.data:
return self.config.data[data_key]
# Fallback: check if there's mock_data in page config
if "mock_data" in page_config:
return page_config["mock_data"]
return []
def _connect_form_to_orchestrator(
self,
submit_btn: gr.Button,
fields: dict,
template: FormPage,
result_container: gr.Column,
processing_html: gr.HTML,
result_output: gr.Markdown,
) -> None:
"""Connect form submission to orchestrator processing."""
def process_form(*field_values):
# Build input dict from field values
field_keys = template.get_field_keys()
input_data = dict(zip(field_keys, field_values))
# Process through orchestrator
if self.config.orchestrator:
result = self.config.orchestrator.process(input_data)
return (
gr.update(visible=True), # Show result container
"", # Clear processing (done)
f"### Result\n\n{self._format_result(result)}"
)
else:
return (
gr.update(visible=True),
"",
"### Result\n\n*Processing complete (no orchestrator configured)*"
)
submit_btn.click(
fn=process_form,
inputs=list(fields.values()),
outputs=[result_container, processing_html, result_output],
)
def _format_result(self, result: dict) -> str:
"""Format orchestrator result as markdown."""
if not result:
return "*No result*"
md = ""
for key, value in result.items():
label = key.replace("_", " ").title()
if isinstance(value, list):
md += f"**{label}:**\n"
for item in value:
if isinstance(item, dict):
md += f"- {item.get('event', item.get('title', str(item)))}\n"
else:
md += f"- {item}\n"
else:
md += f"**{label}:** {value}\n\n"
return md
def launch(self, **kwargs) -> None:
"""Build and launch the app."""
demo = self.build()
# Use Glass theme with light mode
if "theme" not in kwargs:
kwargs["theme"] = gr.themes.Glass()
demo.launch(**kwargs)
def build_app(config: dict | AppConfig) -> gr.Blocks:
"""
Build a Gradio app from configuration.
Args:
config: App configuration dict or AppConfig instance
Returns:
gr.Blocks instance ready to launch
"""
app = DemoApp(config)
return app.build()
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